What Is a Chemical Equation for the Combustion of Hydrogen?


Quick Answer

The chemical equation for the combustion of hydrogen is 2H2 + O2 → 2H2O. During hydrogen combustion, the heat from burning makes hydrogen chemically react with oxygen gas, O2, in the air to form water.

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Full Answer

In this reaction, two molecules of hydrogen gas, H2, react with one molecule of O2 to form two molecules of water, H2O. A significant amount of energy, in the form of heat, is required to start the reaction. Due to the presence of extreme heat, the water created by the reaction is not a liquid but is gaseous water vapor. The reaction also generates large amounts of heat, which is produced by the breaking of the chemical bonds connecting the gases.

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